Being on copper, a mile away from the supposed FTTC, just have 12Mb download at best. Often I use my mobile hotspot which gives 80Mb, but still objects like the Adriatic Sea multipolygon (now deleted courtesy of a DWG member and replaced by the restored place node), took me an hour to fetch piece by piece before being able to confirm that edits/repairs restored the relation to proper closed state. Such objects I save to a local datafile but still I refresh it times out. On a 0.5Gb line that would probably not be the case.